Soil and environmental factors related to nodulation in Cowania and Purshia Timothy L. RighettiCarolyn H. ChardRalph A. Backhaus OriginalPaper Pages: 147 - 160
Build up and depletion of soil phosphorus and potassium and their uptake by rice and wheat in a long-term field experiment Anand SwarupR. K. Chhillar OriginalPaper Pages: 161 - 170
Role of trichomes in sunflower tolerance to manganese toxicity F. P. C. BlameyD. C. JoyceC. J. Asher OriginalPaper Pages: 171 - 180
Investigations into nitrogen sources and supply in reclaimed colliery spoil J. P. PalmerP. J. WilliamsC. O. Elias OriginalPaper Pages: 181 - 194
Root growth of soybean (Glycine max L. Merr.) and cowpea (Vigna unguiculata Walp.) on a hydromorphic toposequence in Western Nigeria N. R. HulugalleR. Lal OriginalPaper Pages: 195 - 208
Uptake of organic matter by the roots of sweet potato: Analysis of the δ14C value of plants K. OkadaA. Kumura OriginalPaper Pages: 209 - 219
Phosphorus requirements of the wheat plant in various stages of its life cycle W. RömerG. Schilling OriginalPaper Pages: 221 - 229
Effect of copper activity on carbon and nitrogen mineralization in field-aged copper-enriched soils M. M. MinnichM. B. McBride OriginalPaper Pages: 231 - 240
Solubility relationships of arsenic in calcareous soils and its uptake by corn Muhammad Sadiq OriginalPaper Pages: 241 - 248
The effect of cropping and fertiliser nitrogen rates on nitrogen balance in soil V. P. Shabaev OriginalPaper Pages: 249 - 256
Comparaison du bilan d'éléments nutritifs de plantations paysannes et industrielles de palmiers à huile sur les sols ferrallitiques du bassin sedimentaire du sud de la Côte d'Ivoire C. H. RothH. WildhagenB. Meyer OriginalPaper Pages: 257 - 267
Assessment of EUF-K values for optimal maize nutrition on an Alfisol in Nigeria G. O. ObigbesanE. A. AkinrindeO. Kayode Short Communications Pages: 269 - 272
The effect of sulfur-containing nitrogen fertilizers on the elemental composition of celery (Apium graveolens) grown on a polluted marsh soil Ewald SchnugChristian Schnier Short Communications Pages: 273 - 278